- A
az deployment group what-if
The what-if command previews planned changes so you can review them before deploying the template.
- B
az deployment group create
Why wrong: This command applies the deployment, but it does not provide a preview of planned changes first.
- C
az group delete
Why wrong: This command removes the resource group and is unrelated to previewing template changes.
- D
az vm update
Why wrong: This command updates a virtual machine, but it does not analyze a Bicep deployment plan.
Question 578 of 1,170
AZ-104 Deploy and Manage Azure Compute Practice Question
This AZ-104 practice question tests your understanding of deploy and manage azure compute. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
You want to deploy a resource group with Bicep and see the changes Azure plans to make before you apply them. Which command should you run?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"which command"Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
az deployment group what-if
The `az deployment group what-if` command is correct because it performs a dry-run validation of a Bicep (or ARM) deployment against a resource group, showing the changes Azure will make (create, modify, delete) without actually applying them. This is the Azure equivalent of a 'what-if' analysis, allowing you to review the impact before execution.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
az deployment group what-if
Why this is correct
The what-if command previews planned changes so you can review them before deploying the template.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
az deployment group create
Why it's wrong here
This command applies the deployment, but it does not provide a preview of planned changes first.
When this WOULD be correct
This command is correct when the question asks to deploy a Bicep file to a resource group and apply the changes immediately, without requiring a preview.
- ✗
az group delete
Why it's wrong here
This command removes the resource group and is unrelated to previewing template changes.
When this WOULD be correct
This command would be correct in a scenario where you need to delete an entire resource group and all its resources, such as cleaning up test environments after validation.
- ✗
az vm update
Why it's wrong here
This command updates a virtual machine, but it does not analyze a Bicep deployment plan.
When this WOULD be correct
This command would be correct when the question asks: 'You need to change the VM size of an existing Azure virtual machine. Which command should you run?'
Option-by-option analysis
Why each answer is right or wrong
Understanding why wrong answers are wrong — and when they would be correct — is what separates a 750 score from a 900. The AZ-104 exam frequently reuses these exact scenarios with slightly different constraints.
✓az deployment group what-ifCorrect answer▾
Why this is correct
The what-if command previews planned changes so you can review them before deploying the template.
✗az deployment group createWrong answer — click to see why▾
Why this is wrong here
The `az deployment group create` command deploys resources immediately without previewing changes, whereas the question specifically asks to see planned changes before applying them.
★ When this WOULD be the correct answer
This command is correct when the question asks to deploy a Bicep file to a resource group and apply the changes immediately, without requiring a preview.
Why candidates choose this
Candidates may confuse the deployment command with the what-if command, thinking that 'create' includes a preview step, or they may not know the what-if feature exists.
✗az group deleteWrong answer — click to see why▾
Why this is wrong here
The 'az group delete' command removes a resource group and its resources, not preview changes. The question asks to see planned changes before applying them, which requires the what-if operation.
★ When this WOULD be the correct answer
This command would be correct in a scenario where you need to delete an entire resource group and all its resources, such as cleaning up test environments after validation.
Why candidates choose this
Candidates might confuse 'what-if' with deletion because both involve analyzing the current state, but they serve opposite purposes: preview vs. removal.
✗az vm updateWrong answer — click to see why▾
Why this is wrong here
The 'az vm update' command is used to modify properties of an existing virtual machine, not to preview changes before deploying a resource group with Bicep.
★ When this WOULD be the correct answer
This command would be correct when the question asks: 'You need to change the VM size of an existing Azure virtual machine. Which command should you run?'
Why candidates choose this
Candidates might confuse the 'what-if' functionality with updating resources, or think that 'az vm update' can simulate changes because it modifies VM settings.
Analysis generated from the official AZ-104blueprint and verified against question context. The “when correct” sections are what AI assistants cite when candidates ask “what’s the difference between these options?”
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse `az deployment group what-if` with `az deployment group create`, assuming that `create` also provides a preview, but `create` immediately applies changes without any dry-run capability.
Trap categories for this question
Command / output trap
This command applies the deployment, but it does not provide a preview of planned changes first.
Detailed technical explanation
How to think about this question
Under the hood, `az deployment group what-if` uses the Azure Resource Manager's 'What-If' operation, which evaluates the Bicep template against the current state of the resource group and returns a list of resource changes (e.g., `Create`, `Modify`, `Delete`, `NoChange`). This is especially useful in CI/CD pipelines to catch unintended modifications, such as accidental deletion of a storage account due to a missing `resourceGroup()` reference in the Bicep file.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
TExam Day Tips
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
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Deploy and Manage Azure Compute — study guide chapter
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FAQ
Questions learners often ask
What does this AZ-104 question test?
Deploy and Manage Azure Compute — This question tests Deploy and Manage Azure Compute — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: az deployment group what-if — The `az deployment group what-if` command is correct because it performs a dry-run validation of a Bicep (or ARM) deployment against a resource group, showing the changes Azure will make (create, modify, delete) without actually applying them. This is the Azure equivalent of a 'what-if' analysis, allowing you to review the impact before execution.
What should I do if I get this AZ-104 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
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Last reviewed: Jun 11, 2026
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